R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

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Controlling BGP path selection
By configuring BGP path attributes, you can control BGP path selection.
Specifying a preferred value for routes received
Perform this task to set a preferred value for specific routes to control BGP path selection.
Among multiple routes that have the same destination/mask and are learned from different peers, the
one with the greatest preferred value is selected as the optimal route.
To specify a preferred value for routes from a peer or peer group (IPv4 unicast/multicast address family):
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP IPv4 unicast address
family view, BGP-VPN IPv4
unicast address family view, or
BGP IPv4 multicast address
family view.
• Enter BGP IPv4 unicast address
family view:
a. bgp as-number
b. address-family ipv4
[ unicast ]
• Enter BGP-VPN IPv4 unicast
address family view:
c. bgp as-number
d. ip vpn-instance
vpn-instance-name
e. address-family ipv4
[ unicast ]
• Enter BGP IPv4 multicast
address family view:
f. bgp as-number
g. address-family ipv4
multicast
N/A
3. Specify a preferred value for
routes received from a peer or
peer group.
peer { group-name | ip-address }
preferred-value value
The default preferred value is 0.
To specify a preferred value for routes from a peer or peer group (IPv6 unicast/multicast address family):
Ste
p
Command Remarks
1. Enter system view.
system-view N/A